Isospin Breaking in K3π Decays I: Strong Isospin Breaking
Abstract
The CP conserving amplitudes for the decays K3π are calculated in Chiral Perturbation Theory. The calculation is made at the next-to-leading order including strong and local electromagnetic isospin breaking. A comparison is made between the squared amplitudes with and without isospin violation to estimate the size of the effect. We find corrections of order five percent in the amplitudes.
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